Controlling means for gyratory structures.



G. W. COMBS.

CONTROLLING MEANS FOR GYR-ATORY STRUCTURES.

APPLICATION HLED AUG.28| 19H.

Patented June 8, 1915.

Z SHkETS-SHEET 1.

G. W. COMBS.

CONTROLLING MEANS FOR GYRATORY STRUCTURES. APPLICATION FILED Auchzs, 1911.

Patented June 8, 1915.

2 SHEETS-SHEET 2.

"UNITED STATES PATENT OFFICE.

GEORGE w. ooMns', LEAvENwon/rri, Kansas.

. coN'rn/oLLING MEANs' FOR GYnA'r'onY s'rn'oczrnnns.

Specification of Letters Patent.

Application filed August as, 1911. Serial no. 046,321.

i To all whom it may concern:

Be it known'lthat I; GEORGE Qoirns, a citizen of the United States, residing at Leavenworth, in the county of Leavenworth and State of Kansas, have invented certain new and useful Improvements inControlling. Means for Gyratory Structures, of which the following is a specification;

My invention relates to improvements in ryst u tuw v such as sifters and theli (c, and-my primary controlling means forv object is to provide newand usefulmeans of this character which willautomatically' adjust itsel fto the variable speeds and loads to wvhich thestructure is subjected,. and thus tend to restrainsaid structure from abnorma-l lateral or orbitalv movement and render as action more uniform. My improved means is, preferably, wholly arranged be-.

tween the boxes of the ,structure,=in stead of at theends thereof, consequently, access may be had to the driving mechanism and bear-n ings of the structure durin I v the operation thereof without danger being struck,

which is likely to occur where the customary rigid type of unbalancing weights are employcd above and below the structure. A further advantage in placing my device wholly between the boxes instead ofat the top and bottom thereof, resides in the fact that it is out of the way of the spouts enterin and leaving'the boxes. I,

%n order that the invention may be, fully understood, reference will now be made to the accompanying drawings, in which:

Figure 1 is a side elevation of a gyratory sifter structure provided with my invention. Fig. 2 is a broken side elevation of the sifter structure provided with my inven tion, the latter being in vertical section.

Figs. 3 and 4 are cross sections of the inve'lntion on lines III-III and IV-IV, respectively, of Fig. 2. Fig. 5 is a broken side elevation of a sifter structure, provided with modified form of the invention, and .Fig.

3 is a cross section of the invention on line VIVI of Fig. 5.

I have shown the invention applied, in-the present instance, to a sifter structure embodying sifter boxes 1,united at their upper and lower ends-by spiders 2 and 3, and freely susgentded for gyration by a plurality of ree s I PatentedJun e8,1915.

Spiders 2 and 3"have centrallydisposed bearings 5 and 6, respectively, to support a centrally-disposed vertically-positionedshaft 7, having oppositely-extending tapered upper and lowerporti'ons 8and' 9, respectively.

.10 and .11 designate two' sleeves mounted on the taperedportions=8nand 9- of shaft 7,

; to which they are keyedor otherwise fixed for rotation therewith, said sleeves being provided with hubs-l2 and-'13, mounted upon bearings 5 and 6, which latter havel-ubricant chambers 14 and 15, respectively, to hold a supply of lubricant for the bearings 5 and 6.

Sleeves ,10 and 11 are-further secured to shaft 7 by a connecting-rod: 1-6',having right and left threaded-terminals engaging internally-threaded bosses 1'2 and 18' on the SlCGWBS l0 and 11, respectively. By turning the connecting-rod, 16 in one direction, the sleeves. will be:firmly drawn toward each other upon the tapered portions 8 and 9.0f the shaft, so that there can be no lost motion between these parts. After'the sleeves have been firmly drawn upon the tapered portions of shaft 7, the connecting-rod 16 is held from accidental turning by a pair of jamnuts 19-, mounted on the threaded portions of the rod, and adapted to abut against the bosses l'fland 18. v

20- designates a drive pulley having-a balland-socket connection 21 with a stem 22 supportedby an overhead bearing- 23.

24: designates: a universalcoupling having an eccentric ortion 25 fixed to the-upper ,end of shaft to permit the. latter to move and pin 26 affords a yielding-connection where n" shaft 7 is driven and permitted to gyrale the structure, and the orbital pathis automatically determined by my improved controlling means, consisting of an elon gated weight or member 29, and a plurality of links or members 30,'which latter are pivotally-secured at their free ends to the former by pins 31, and pivotally-secured at their opposite ends to the sleeves by pins 32. Pins 31 are secured from lateral displacement by a pair of screw-plugs 33, screwed into member 29 and abutting against the ends of the pins.

Member 29consists preferably of a heavy weight and is segmental in cross section, to prevent its ends from striking the adjacent sides of boxes 1, between which it is wholly arranged to be out of the way-of spouts A and B entering-iandleaving said boxes."

Member 29 has a plurality of pockets 3% to receive supplemental weights 35, the number of which may be increased or diminished to properly balance the structure, said weights being removably-secured in place by bolts 36 and nuts 37.

Links 30 are preferably of equal length to hold member 29 parallel with shaft 7, so

that when the same is at rest, member 29 will hang close to the shaft, and since it is desirable to have the center of gravity of said member as nearly as possible, in-coincidence with the axis of shaft 7, 1 form a longitudinal groove 38 at the central portion of the inner side of the member to receive the adjacent side of the shaft, and having a recess 39 in sleeve 11 to receive the lowermost pin 31.

When shaft 7 and my improved controlling means are rotated, centrifugal force causes member 29 to swing outward and upward from the shaft, and thus impart gyratory motion to the latter and to the structure. The extent of outward and upward movement of member 29 depends on the speed at which the structure is driven, and thus automatically tends to restrain the structure from lunging or traveling inan abnormal path,- whereas if the member were fixed a predetermined distance from the shaft, it would cause the structure to lunge when starting and stopping, and at such times when the structure was not traveling at normal speed, or subjected to variable loans.

The modified form of controlling means disclosed by Figs. 5 and 6 is substantially the same in construction and operation as the preferred form, the chief difference residing in applying the greater portion of the weight to links 30 instead of to member 29.

Referring in detail to Figs. 5 and (i, 1 designates the @sieve boxes of the structure, which are connected by spiders 2 and 3, having centrally-disposed bearings for the vertically positioned shaft 7''. 10 and 11 designate sleeves keyed to shaft 7* and united by a connecting-bar 1G. 30 designates links pivotally-connected to the sleeves by pins 32 and having enlarged weighted ends 29", united by a member 29 pivotally-connected thereto-by pins 31, to cause said weighted ends 29 to operate in unison. Pins 31 are secured from lateral movement by screwplugs 33" engaging the opposite ends thereof.

Having thus described my invention, what A ent, is:

1. In combination, a gyratory structure,'a

journaled shaft thereto adapted to gyrate therewith, and means to control gyratory motion of said shaft and the structure, consisting of an elongated member, and means mo'vably connecting's'aid member to the shaft at a'plurality of points. Y

2. In combination, agyratory body, a shaft thereto capable of orbital movement, and means to control'orbital,movement of said shaft consistingofian elongated member, and pivotal means"operably-connecting said elongated member and the shaft at a plurality of points. i

3. In combination, a body, yielding means supporting said body for gyration, a shaft to said body, and means to controlgyratory motion of the body, consisting of an elongated weight, and means capable of vertical allel with the shaft.

4. In combination, a body suspended for gyration, a shaft thereto capable of lateral movement in any direction, means to control gyratory motion of the suspended body consisting of a vertically elongated weight movably-connected to: the shaft and provided with pockets, and supplemental weights removably arranged within said pockets.

In combination, a gyratory structure, a centrally-disposed shaft thereto, and means to control gyratory motion of the shaft consisting of an elongated member, and links operably-connecting said member and the shaft. I i

6. In combination, a'gyratory body, a shaft thereto, sleeves fixed to said shaft, and means mud...

and the sleeves.

7. In combination, a gyratory structure, a

journaled shaft thereto, yielding means to drive said shaft, and means parallel with said shaft adapted to swing toward and away from the same according to the speed of rotation, for the purpose described.

8. In combination, a gyratory structure, having centra11y-disposed bearings, a shaft ournaled in said bearings, an eccentric Weight arranged Wholly between said bearings, and links operabl weight and the shaft.

Witnesses y-connecting said 10 my signature, es.

GEORGE W. COMBS.

G. H. SHEIDENB MEDDICK.

ERGER, 

